/* ===========================================
   MODERN HEADER CSS - COMPLETE & CONSOLIDATED
   =========================================== */

/* ========== CSS VARIABLES & RESET ========== */
:root {
    /* Primary Colors */
    --primary: #ed1c24;
    --primary-light: #fce8e9;
    --primary-dark: #c4171d;
    
    /* Text Colors */
    --text-base: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    
    /* Background Colors */
    --bg-white: #ffffff;
    --bg-gray-50: #f9fafb;
    --bg-gray-100: #f3f4f6;
    --bg-gray-200: #e5e7eb;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Z-index */
    --z-header: 50;
    --z-offcanvas: 100;
    --z-modal: 1000;
    --z-tooltip: 1100;
}

/* ========== BASE STYLES ========== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* ========== HEADER TOP SECTION ========== */
.header-top {
    position: relative;
    background: #c4171d;
    overflow: hidden;
}

.header-top::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    animation: shimmer 3s infinite;
}

.header-top-shimmer {
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* Social Icons */
.social-links {
    display: flex;
    align-items: center;
}

.social-icon {
    backdrop-filter: blur(10px);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.social-icon::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
   
    transition: left 0.5s ease;
}

.social-icon:hover::before {
    left: 100%;
}

/* Auth Buttons */
.dashboard-btn, .login-btn {
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.dashboard-btn::before, .login-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.dashboard-btn:hover::before, .login-btn:hover::before {
    left: 100%;
}

/* Announcement Bar */
.announcement-bar {
    animation: fadeInDown 0.5s ease-out;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========== MAIN HEADER ========== */
.header {
    box-shadow: var(--shadow-md);
    
    position: sticky;
    top: 0;
    z-index: var(--z-header);
    transition: var(--transition-base);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-lg);
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* Logo */
.logo-image {
    transition: var(--transition-base);
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.logo-image:hover {
    transform: scale(1.05);
    filter: drop-shadow(0 4px 12px rgba(237, 28, 36, 0.2));
}

/* ========== NAVIGATION ========== */
/* Desktop Navigation */
.nav-menu-desktop {
    opacity: 1;
    transform: translateY(0);
    transition: opacity var(--transition-base), transform var(--transition-base);
}

.header.scrolled .nav-menu-desktop {
    opacity: 0.95;
}

.nav-link {
    position: relative;
    padding: 0.5rem 0;
    transition: color var(--transition-fast);
}

.nav-link:hover {
    color: var(--primary);
}

.nav-link:hover .link-underline {
    width: 100%;
}

.nav-link:hover .link-dot {
    opacity: 1;
    animation: dotBounce 0.6s ease;
}

.nav-link.active {
    color: var(--primary);
    font-weight: 600;
}

.nav-link.active .link-underline {
    width: 100%;
}

.nav-link.active .link-dot {
    opacity: 1;
}

.link-underline {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--primary-dark));
    border-radius: 2px;
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.link-dot {
    position: absolute;
    bottom: -0.25rem;
    left: 50%;
    width: 0.25rem;
    height: 0.25rem;
    background: var(--primary);
    border-radius: 50%;
    opacity: 0;
    transform: translateX(-50%);
    transition: opacity 0.3s ease;
}

@keyframes dotBounce {
    0%, 100% { transform: translateX(-50%) scale(1); }
    50% { transform: translateX(-50%) scale(1.5); }
}

/* CTA Button */
.cta-btn {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    box-shadow: 0 4px 15px rgba(237, 28, 36, 0.3);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(237, 28, 36, 0.4);
}

.cta-shimmer {
    transition: transform 1s ease;
}

.cta-btn:hover .cta-shimmer {
    transform: translateX(100%);
}

/* Search Button */
.search-btn {
    transition: var(--transition-base);
}

.search-btn:hover {
    transform: rotate(15deg) scale(1.1);
    box-shadow: 0 4px 12px rgba(237, 28, 36, 0.2);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    transition: var(--transition-base);
    position: relative;
}

.mobile-menu-toggle:hover .menu-toggle-glow {
    opacity: 1;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translateY(8px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: scale(0);
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translateY(-8px);
}

.menu-toggle-glow {
    transition: opacity 0.3s ease;
}

/* ========== SEARCH BAR ========== */
.search-bar {
    animation: slideDown 0.3s ease-out;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.search-bar input {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    transition: var(--transition-base);
}

.search-bar input:focus {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 0 0 3px rgba(237, 28, 36, 0.1);
}

.search-suggestions {
    max-height: 300px;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--primary) var(--bg-gray-100);
}

.search-suggestions::-webkit-scrollbar {
    width: 6px;
}

.search-suggestions::-webkit-scrollbar-track {
    background: var(--bg-gray-100);
    border-radius: var(--radius-lg);
}

.search-suggestions::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: var(--radius-lg);
}

/* ========== OFFCANVAS MENU ========== */
.offcanvas-end {
    border-left: 1px solid rgba(0, 0, 0, 0.05);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: -5px 0 25px rgba(0, 0, 0, 0.1);
}

.offcanvas-end.show {
    transform: translateX(0) !important;
}

/* Offcanvas backdrop */
.offcanvas-backdrop {
    backdrop-filter: blur(5px);
    transition: opacity 0.3s ease;
}

.offcanvas-backdrop.show {
    display: block;
    opacity: 1;
}

/* User Info */
.user-info {
    animation: fadeInUp 0.5s ease-out;
    box-shadow: var(--shadow-sm);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Mobile Navigation Items */
.mobile-nav li a {
    transition: var(--transition-base);
    border-left: 3px solid transparent;
}

.mobile-nav li a:hover {
    border-left-color: var(--primary);
    background: linear-gradient(90deg, var(--primary-light), transparent);
}

.mobile-nav li a.active {
    border-left-color: var(--primary);
    background: linear-gradient(90deg, var(--primary-light), transparent);
}

/* Social Icons Mobile */
.social-icon-mobile {
    transition: var(--transition-base);
    border: 1px solid transparent;
}

.social-icon-mobile:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(237, 28, 36, 0.2);
}

/* Auth Buttons Mobile */
.btn-shimmer {
    transition: transform 1s ease;
}

.group:hover .btn-shimmer {
    transform: translateX(100%);
}

.btn btn--base donation-cta__btn {
    border-radius: none;
}

/* ========== PROGRESS INDICATOR ========== */
.progress-indicator {
    opacity: 0;
    transition: opacity 0.3s ease, transform 0.3s ease;
    background: linear-gradient(90deg, 
        var(--primary), 
        #ff3366, 
        var(--primary)
    );
    background-size: 200% 100%;
    animation: progressGradient 2s ease infinite;
}

.progress-indicator.visible {
    opacity: 1;
}

@keyframes progressGradient {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ========== ANIMATION UTILITIES ========== */
.animate-shimmer {
    animation: shimmer 2s infinite;
}

.animate-pulse-slow {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.animate-fadeIn {
    animation: fadeIn 0.5s ease-out;
}

.animate-slideDown {
    animation: slideDown 0.3s ease-out;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ========== RESPONSIVE DESIGN ========== */
/* Tablet (768px and below) */
@media (max-width: 768px) {
    .header-top {
        padding: 6px 0;
    }
    
    .header {
        padding: 10px 0;
    }
    
    .logo-image {
        height: 36px;
    }
    
    .mobile-nav li a {
        padding: 12px 16px;
    }
    
    /* Hide dividers and language selector on mobile */
    .header-top .h-4.w-px,
    .language-selector:not(.offcanvas-header .language-selector) {
        display: none;
    }
    
    /* Stack social icons and auth button on small screens */
    .header-top .flex.items-center {
        flex-wrap: wrap;
        justify-content: center;
        gap: 8px;
    }
}

/* Mobile (640px and below) */
@media (max-width: 640px) {
    .header-top .container > div {
        justify-content: center;
    }
    
    .auth-buttons a {
        font-size: 0.75rem;
        padding: 6px 12px;
    }
    
    .social-icon {
        width: 24px;
        height: 24px;
    }
    
    .offcanvas-end {
        width: 100%;
        max-width: 100%;
    }
}

/* Small Mobile (480px and below) */
@media (max-width: 480px) {
    .logo-image {
        height: 32px;
    }
    
    .announcement-bar .flex {
        flex-direction: column;
        text-align: center;
    }
    
    .mobile-nav li a {
        padding: 10px 14px;
    }
    
    .offcanvas-footer {
        padding: 0rem;
    }
}

/* ========== SMOOTH TRANSITIONS ========== */
* {
    transition: background-color var(--transition-base), 
                color var(--transition-base), 
                transform var(--transition-base), 
                border-color var(--transition-base),
                box-shadow var(--transition-base),
                opacity var(--transition-base),
                width var(--transition-base),
                height var(--transition-base);
}

/* ========== ACCESSIBILITY ========== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles for accessibility */
a:focus,
button:focus,
input:focus,
select:focus,
textarea:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    box-shadow: 0 0 0 3px rgba(237, 28, 36, 0.1);
}

/* Skip to content link for screen readers */
.skip-to-content {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary);
    color: white;
    padding: 8px;
    z-index: var(--z-modal);
    text-decoration: none;
}

.skip-to-content:focus {
    top: 0;
}

/* ========== PRINT STYLES ========== */
@media print {
    .header-top,
    .announcement-bar,
    .search-bar,
    .mobile-menu-toggle,
    .progress-indicator,
    .offcanvas-backdrop {
        display: none !important;
    }
    
    .header {
        position: static !important;
        background: white !important;
        box-shadow: none !important;
    }
    
    .logo-image {
        filter: none !important;
    }
}

/* ========== UTILITY CLASSES ========== */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
}

@media (min-width: 640px) {
    .container {
        padding: 0 1.5rem;
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 2rem;
    }
}

/* Flex utilities */
.flex {
    display: flex;
}

.items-center {
    align-items: center;
}

.justify-between {
    justify-content: space-between;
}

.justify-end {
    justify-content: flex-end;
}

.flex-col {
    flex-direction: column;
}

/* Gap utilities */
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-5 { gap: 1.25rem; }
.gap-6 { gap: 1.5rem; }

/* Padding utilities */
.p-2 { padding: 0.5rem; }
.p-3 { padding: 0.75rem; }
.p-4 { padding: 1rem; }
.p-5 { padding: 1.25rem; }
.p-6 { padding: 1.5rem; }

.py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-3 { padding-top: 0.75rem; padding-bottom: 0.75rem; }
.py-4 { padding-top: 1rem; padding-bottom: 1rem; }

.px-2 { padding-left: 0.5rem; padding-right: 0.5rem; }
.px-3 { padding-left: 0.75rem; padding-right: 0.75rem; }
.px-4 { padding-left: 1rem; padding-right: 1rem; }

/* Margin utilities */
.ml-2 { margin-left: 0.5rem; }
.ml-4 { margin-left: 1rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mt-4 { margin-top: 1rem; }

/* Text utilities */
.text-sm { font-size: 0.875rem; }
.text-base { font-size: 1rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }

.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

.text-gray-700 { color: #374151; }
.text-primary { color: var(--primary); }
.text-white { color: white; }

/* Background utilities */
.bg-white { background-color: white; }
.bg-gray-100 { background-color: var(--bg-gray-100); }
.bg-primary { background-color: var(--primary); }
.bg-primary-dark { background-color: var(--primary-dark); }

/* Border radius utilities */
.rounded { border-radius: 0.25rem; }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: 9999px; }

/* Shadow utilities */
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }

/* Transition utilities */
.transition-all { transition: all var(--transition-base); }
.transition-colors { transition: background-color var(--transition-base), border-color var(--transition-base), color var(--transition-base); }
.transition-transform { transition: transform var(--transition-base); }
.transition-opacity { transition: opacity var(--transition-base); }
.duration-300 { transition-duration: 300ms; }
.duration-500 { transition-duration: 500ms; }

/* Position utilities */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }

.inset-0 { top: 0; right: 0; bottom: 0; left: 0; }
.top-0 { top: 0; }
.left-0 { left: 0; }
.right-0 { right: 0; }
.bottom-0 { bottom: 0; }

/* Z-index utilities */
.z-40 { z-index: 40; }
.z-50 { z-index: 50; }

/* Display utilities */
.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }
.flex { display: flex; }

/* Width & Height utilities */
.w-full { width: 100%; }
.w-6 { width: 1.5rem; }
.w-7 { width: 1.75rem; }
.w-8 { width: 2rem; }
.w-10 { width: 2.5rem; }

.h-4 { height: 1rem; }
.h-6 { height: 1.5rem; }
.h-7 { height: 1.75rem; }
.h-8 { height: 2rem; }
.h-10 { height: 2.5rem; }

.h-auto { height: auto; }

/* Overflow utilities */
.overflow-hidden { overflow: hidden; }
.overflow-y-auto { overflow-y: auto; }

/* Backdrop utilities */
.backdrop-blur-sm { backdrop-filter: blur(4px); }
.backdrop-blur-md { backdrop-filter: blur(12px); }

/* Transform utilities */
.transform { transform: translate(var(--tw-translate-x), var(--tw-translate-y)) rotate(var(--tw-rotate)) skewX(var(--tw-skew-x)) skewY(var(--tw-skew-y)) scaleX(var(--tw-scale-x)) scaleY(var(--tw-scale-y)); }
.-translate-y-0\.5 { --tw-translate-y: -0.125rem; }
.-translate-y-1 { --tw-translate-y: -0.25rem; }
.translate-x-0 { --tw-translate-x: 0px; }
.translate-x-full { --tw-translate-x: 100%; }
.-translate-x-1\/2 { --tw-translate-x: -50%; }
.-translate-y-1\/2 { --tw-translate-y: -50%; }

/* Border utilities */
.border { border-width: 1px; }
.border-2 { border-width: 2px; }
.border-t { border-top-width: 1px; }
.border-b { border-bottom-width: 1px; }
.border-l { border-left-width: 1px; }

.border-gray-100 { border-color: var(--bg-gray-100); }
.border-gray-200 { border-color: var(--bg-gray-200); }
.border-primary { border-color: var(--primary); }
.border-white\/20 { border-color: rgba(255, 255, 255, 0.2); }

/* Opacity utilities */
.opacity-0 { opacity: 0; }
.opacity-100 { opacity: 1; }

/* Responsive display utilities */
@media (min-width: 768px) {
    .md\:block { display: block; }
    .md\:hidden { display: none; }
    .md\:py-4 { padding-top: 1rem; padding-bottom: 1rem; }
    .md\:px-4 { padding-left: 1rem; padding-right: 1rem; }
    .md\:gap-3 { gap: 0.75rem; }
    .md\:gap-6 { gap: 1.5rem; }
}

@media (min-width: 1024px) {
    .lg\:gap-6 { gap: 1.5rem; }
    .lg\:gap-8 { gap: 2rem; }
}

@media (min-width: 1280px) {
    .xl\:flex { display: flex; }
    .xl\:hidden { display: none; }
}